14. ILCSC Membership
a) The
members of the Committee will consist of the following:
i. Directors of the major
particle physics related laboratories in the three regions that provide core support to
ILC
ii. One representative each
from the three regional steering groups
iii. One representative each
from the physics community of the three regions
iv. Chairperson
v. One representative from
Russia
vi. One representative from
China
vii. One ICFA representative
from the "Other Countries" category
There will be a Committee Secretary.
A representative of the FALC Resource Group will be
invited to all ILCSC meetings
b) The
Chair of the ILCSC will be chosen by ICFA and have a term of two years. The Chair
position shall normally rotate among the regions in succession. The Chair should
not be one of the “Directors” as defined in (i) above.
c) The
members in category ii and iii are appointed by the regional steering committee for three
year terms, renewable as appropriate.
Revision of Mandate
15. The mandate of the ILCSC shall be reviewed by
ICFA every three years to determine if the purpose is being properly served and remains
appropriate or if the activity should be terminated.
Current Membership of the ILCSC (1 November
2008)
|
Directors
|
|
CERN
|
Robert Aymar
|
|
DESY
|
Albrecht Wagner
|
|
Fermilab
|
Pier Oddone
|
|
KEK
|
Atsuto Suzuki
|
|
SLAC
|
Persis Drell
|
|
|
|
|
LC Steering Group
Chairs
|
|
Asian
|
Won Namkung
|
|
European
|
Karlheinz Meier
|
|
N. American
|
Satoshi Ozaki
|
|
|
|
|
Other
|
|
Chair
|
Enzo Iarocci
|
|
China (IHEP
Director)
|
Hesheng Chen
|
|
Russia (BINP
Director)
|
Alexander Skrinsky
|
|
ICFA outside LC
regions
|
Shih-Chang Lee
|
|
Asia Rep.
|
Sachio Komamiya
|
|
Europe Rep.
|
Juan Fuster
|
|
N. American
Rep.
|
Harry Weerts
|
|
|
|
|
Secretary
|
|
Roy Rubinstein
|
Summary of the ILCSC
Meeting
8 May 2006
DESY Zeuthen
1. GDE Report
Barry Barish, the GDE Director, described the current GDE
activities, including progress towards the Reference Design Report (RDR) A
preliminary RDR will be released after the November 2006 GDE meeting, which will include
costs (using the ITER "value" and CERN "core" models, with information on how to
translate these into any country's cost system). The ILC R&D program includes
the detector R&D needed to reach the combined accelerator/detector performance
goals. Barry discussed the need for engineers, technicians, etc. currently based at
labs around the world, to work on ILC items.
2. MAC Report
ILCSC set up a Machine Advisory Committee (MAC), chaired
by Ferdinand Willeke (DESY) - see
http://www.fnal.gov/directorate/icfa/Machine_Advisory_Committee.html
MAC met for the first time in April 2006, and heard
presentations by several GDE members. MAC produced a report, which was presented to
ILCSC and also to GDE. A key question raised by MAC is how realistic is the main
linac design accelerating gradient of 35 MV/m. MAC also questioned the extent to
which cost considerations have influenced the design so far.
3. Worldwide
Study
The Worldwide Study for ILC physics and detectors (WWS)
outlined the needs for detector R&D funding over the next several years. ILCSC
asked WWS to provide recommendations on detector R&D prioritization, and to name
missing R&D items.
WWS is taking responsibility fot the Detector Concept
Report which will accompany the RDR.
4. GDE MOU
Signatories
The original Memorandum of Understanding for the GDE has
eleven signatories (see http://www.fnal.gov/directorate/icfa/ILC_GDE_MOU.pdf
A procedure was set up so that additional institutions could
join.
Summary of the ILCSC
Meeting
30 July 2006
Moscow
1. GDE
Barry Barish reported on present GDE activities. The GDE
is on track to produce the Reference Design Report (RDR) by the end of 2006. The GDE now
consists of ~62 people (~30 FTEs) coordinating ~350 people in labs around the world.
Costing of the design is now under way, with strict cost disclosure rules. The 500 GeV
BCD with "essentials" for 1 TeV will be costed, using ITER "Value" and the CERN "CORE"
model; there will be information given on how to translate these to any individual
country's costs. A 7-year construction phase is assumed. The cost will include the 1 TeV
footprint, not 1 TeV tunnels; IR and BDS are scaled to 1 TeV, but some magnets will have
to be added or replaced to reach 1 TeV; IR shielding and size is for 1 TeV.
Barry described the different costing methodologies
(scaled TESLA, industrial studies, and in-house engineering). In the next few months,
cost performance will be optimized, cost data validated, the cost-drivers within systems
identified and studied, and a finite number of potential baseline changes selected. There
will be many reviews before the November 2006 GDE meeting, with a draft of the RDR
available then, and a glossy ILC report (coordinating RDR and Detector Concept Report
(DCR)) ready for release in early 2007. The RDR will be ~250 pages; the DCR will be ~250
pages.
Barry has requested an independent cost review of the ILC
design in early 2007. ILCSC felt that it should become involved in an international cost
validation process, not to evaluate costs, but to study the methodology by which they are
derived. A draft charge for such a review is under discussion.
2. Worldwide
Study
Francois Richard discussed recent WWS activities. The
first draft of the physics part of the DCR will be available in September 2006. The 4
detector concepts will be combined for the November 2006 GDE meeting, with only one
averaged costing, including ongoing and still needed R&D. The DCR will cover why 2
IRs are needed, and the case for 1 TeV; options, such as g g , will only be lightly covered.
Regarding WWS-GDE interactions, a key issue is 2 IRs; also
important is possible descoping of, for example, peak luminosity, positron polarization,
maximum energy, muon spoilers, etc. There are now frequent meetings between BDS/MDI
experts and the WWS co-chairs.
The timing of detector collaboration formation needs
study, and the experience of the LHC detector collaborations will be a useful
guide.
3. Machine Advisory Committee
(MAC)
The ILC MAC met for the first time in April 2006; this
meeting was short, with insufficient time available for breakout or closeout sessions.
The next MAC meeting, in September 2006, will be longer and will have both breakout and
closeout sessions.
4. ILC School
An ILC Accelerator School was held in May 2006; the
limited number of student openings was oversubscribed by a factor of more than five,
showing the considerable interest in the ILC. Future ILC accelerator schools are in the
planning stage.
5. ILC Parameters
In order to obtain a better understanding of the relation
between ILC cost and performance, ILCSC decided to ask the Parameters Subcommittee
(chaired by Rolf Heuer) to re-examine its 2003 report. Its new mandate should include a
revisit of the Baseline Machine performance and Energy Upgrade parameters, taking into
account possible new insights and developments and a discussion, together with the GDE,
of all areas of the RDR design optimization affecting the performance parameters. The
Subcommittee should revisit the options beyond the Baseline Machine it had established in
2003, and provide clear cost versus performance guidance as it affects the initial
machine configuration.
Summary of the ILCSC
Meeting
11 November 2006
Valencia, Spain
1. GDE Report
Barry Barish reported that the final RDR design/cost
document was reviewed at the Valencia GDE meeting. Following the Vancouver GDE meeting,
the goal has been a 30% reduction in costs, which Barry believes will be achieved; there
have been no big single reductions, only many 1% effects. Two 14 mr crossing angle
interaction regions have been approved, as has a central injector
system.
It is hoped to present publicly the RDR with preliminary
costing following the ICFA meeting in Beijing on 8/9 February 2007. Barry described the
several reviews that will be carried out following the RDR release, including an
International Cost Review in Spring 2007 which will involve coordination by ILCSC, ICFA
and FALC.
2. ILC School
There is agreement that the first ILC School, held in
Japan in May 2006, was very successful. ILCSC endorsed the proposal to hold a second
School at Erice in September/October 2007.
3. MAC Report
Ferdinand Willeke, the Chair of the ILC Machine Advisory
Committee (MAC), reviewed the conclusions of the MAC meeting held at KEK on 22-24
September 2006. Another MAC meeting will be held at the Cockcroft Institute, Daresbury,
UK on 10-12 January 2007. It was agreed that the major agenda item would be the ILC cost
and overall design, with specific MAC tasks:
- Review the
soundness of the overall RDR concept, identify any areas of concern,
note what R&D is still needed,
and comment on whether the performance
parameters can be met.
- Review the
cost methodology and identify any areas of concern.
4. Parameters
Subcommittee
The ILCSC Parameters Subcommittee (Paul Grannis, Rolf
Heuer (Chair), Sachio Komamiya, Mark Oreglia, Francois Ricahrd and Dongchul Son) sent
questions to the WWS physics working groups, mainly concerning their needs for integrated
luminosity, energy, energy resolution, and positron polarization. The Subcommittee will
soon update its 2003 "Parameters for the Linear Collider".
5. Beyond the RDR
A discussion was initiated on how the ILC design
organization should evolve following release of the RDR, in order to produce an
Engineering Design Report in 2010.
6. Worldwide
Study
Jim Brau reported on WWS activities, including the need
for additional detector R&D funding, the joint GDE-WWS Machine-Detector Interface
Panel, and the common work with GDE to study the physics impact of suggestions for
reduction of ILC costs.
Summary of the ILCSC
Meeting
12 January 2007
Cockcroft Institute, Daresbury,
UK
1. RDR and Cost
Estimate
There was a discussion of the 10-12 January 2007 MAC
meeting, which had reviewed the preliminary ILC RDR with its cost
estimate. Although MAC raised some detailed questions about the RDR, it
approved of the overall cost methodology. The WWS commented on the proposal
for two detectors in a push-pull arrangement with a common beam delivery
system.
2. RDR and Cost Estimate
Announcement
Plans were discussed for a press conference on 8 February
2007 in Beijing during the ICFA and ILCSC meetings there.
3. International Cost
Review
FALC (Funding Agencies for Large Colliders) has asked
ILCSC to organize an international cost review of the RDR, to take place in the first
half of 2007.
Summary of the ILCSC Meeting and the
55th Meeting of ICFA
8/9 February 2007
Beijing, China
1. Introduction
The schedule of meetings held at IHEP, Beijing, was: 8
February morning, Joint ICFA and ILCSC; 8 February afternoon, ILCSC; 9 February, ICFA.
There were no restrictions on which of the meetings members attended, and so one combined
summary has been prepared for both committees. The reason for the joint meeting was
preparation for the press release of the ILC Reference Design Report (RDR), which was
held on 8 February.
As has become customary at the extended February
ICFA meetings, directors of major world particle physics labs were invited to these
meetings.
2. GDE Activities
T Barry Barish gave a detailed report on the RDR and its
value costing methodology. He noted that the detectors were not included in the cost. His
report was preparatory to the public release of the RDR later on 8 February.
ICFA and ILCSC thanked Barry for leading the
effort to reach this important milestone.
3. Press Conference
Following agreement on the press release to accompany the
publication of the RDR, a press conference was held at which the RDR and the cost were
described, and formally handed to ICFA and ILCSC by Barish.
4. Machine Advisory Committee
(MAC)
Ferdinand Willeke, the MAC Chair, reported on the 10-12
January 2007 MAC meeting. Overall, MAC found that GDE had worked very hard, and had
converted an originally performance driven design into one that was cost conscious
without scope reduction. MAC agreed that the RDR cost estimate procedure is quite
adequate. There was a GDE response to this MAC report.
5. International Cost
Review
ILCSC and the Funding Agencies for Large Colliders (FALC)
have agreed that there should be an International Cost Review of the RDR, which ILCSC
will organize. The current status is that this review will be held on 23-25 May 2007 at
LAL/Orsay; members of the Review have been selected.
6. Worldwide
Study
Francois Richard reported on progress towards producing
the Detector Conceptual Report. Given the need for an Engineering Design Report (EDR) for
2 detectors in 2010-2011, there should be a selection of 2 detectors by the end of 2008.
ILCSC supported the concept of an International Detector Advisory Group to unify efforts
towards 2 detectors on this timescale, and requested that WWS produce by June 2007 a plan
to lead to this.
7. From RDR to
EDR
There was a GDE proposal for how to get from the current
ILC design status to an EDR; there is general agreement that FALC is not ready to become
the unique GDE oversight body, and ILCSC will continue to be involved for some time into
the future. GDE's proposal will be discussed again at the next ILCSC
meeting.
8. Reports
ICFA heard reports from InterAction, FALC, ICFA Panels,
and from the regions and labs represented at the meeting.
Summary of the ILCSC
Meeting
1 June 2007
DESY
1. GDE Report
The GDE Director, Barry Barish, reviewed GDE activities.
The most recent ILC cost figures are within a few % of those given earlier. The complete
RDR will be presented to FALC in July 2007 and to ILCSC in August 2007. Barish noted that
for the ILC detectors to develop Engineering Design Reports (EDRs) on the same time scale
as that for the accelerator, selection of the two detectors is needed in 2008.
The current MOU for the GDE only covers the RDR
phase, and a new one is needed for the EDR phase. ILCSC will produce a new MOU.
2. MAC Review
T The fourth and final Machine Advisory Committee (MAC)
review of the ILC was held on 26/27 April 2007, and concentrated on the GDE R&D
program. The MAC mandate, membership, and its four reports are available at
http://www.fnal.gov/directorate/icfa/Machine_Avisory_Committee.html
3. International Cost Review
An International Cost Review of the GDE RDR was held on
23-25 May 2007. It was organized by ILCSC, and the Review membership was selected by FALC
and ILCSC. Its mandate, membership and report are at
http://www.fnal.gov/directorate/icfa/International_Cost_Review.html
4. Worldwide
Study
Hitoshi Yamamoto said that WWS would like there to be an
ILC Research Director, appointed by, and reporting to, ILCSC, and also an International
Detector Advisory Group (IDAG) which would review the experimental program and advise the
Research Director. The Research Director would be a full-time appointment.
ILCSC set up a subcommittee to produce a charge
for a Research Director, propose a candidate, and prepare a call for Letters of Intent
for ILC detectors.
Yamamoto described the current detector R&D
review process and its timetable.
5. EDR Phase
Planning
Proposed changes in the GDE organization for the EDR phase
were described by Marc Ross. There will be a work package structure and interested
institutions will take responsibility for the work package deliverables. The process will
be led by Project Managers, who will be added to the GDE structure.
Summary of the ILCSC
Meeting
15 August 2007
Daegu, Korea
1. Reference Design
Report
ILCSC accepted the ILC Reference Design Report (RDR) from
Barry Barish.
2. GDE Activity
Barry Barish noted that a tehnically driven timeline could
have ILC construction start in 2012. He described the project management
organization needed in order to produce an Engineering Design Report (EDR) in 2010.
Barish noted that the detectors need to be on the same timescale as the
accelerator.
3. EDR Phase
Marc Ross described the GDE's plans for the EDR phase,
including resources, staffing and schedule. He gave details of the Work Package structure
needed for the activities, and the MOUs required between the GDE and the institutions
carrying out the work. ILCSC agreed to the EDR phase plan.
4. Machine Advisory Committee (MAC) for the
EDR Phase
The GDE will set up an Accelerator Advisory Board,
composed of both GDE members and outside advisors. It will meet approximately monthly,
and report to GDE. In addition, ILCSC will form a new MAC, which will provide a review of
ILC accelerator activities for ILCSC and the outside community.
5. Worldwide Study
(WWS)
The WWS report was given by Hitoshi Yamamoto. He said that
in order for the detector design and construction to be in synchronism with that of the
accelerator (so data taking can start as the accelerator is ready), the following
detector schedule is proposed:
Summer 2007 - ILCSC
announces call for Letters of Intent (LOLs)
Summer 2008 - Detector teams
submit LOLs
End of 2008 - 2 detector
designs accepted.
Yamamoto discussed the need for an ILC Research Director
(RD), who would be responsible for the development of the experimental program of the
ILC. The RD would be helped by an International Detector Advisory Group
(IDAG).
ILCSC agreed to appoint a Research Director, and to issue
a call for LOIs for ILC detectors.
Summary of the ILCSC
Meeting
25 October 2007
Fermilab
1. GDE Report
Barry Barish described the 4 volumes of the ILC Reference
Design Report; "Gateway to the Quantum Universe" will be translated into 8 languages. The
timescale for Engineering Design Report (EDR) completion is July 2010. The current GDE
membership is Asia 101, Europe 133, Americas 233.
GDE is setting up an Accelerator Advisory Panel (AAP), and
a mandate for AAP has been written. It will be composed of ~10 people, and will meet on a
weekly schedule, with more complete reviews ~every month. AAP's role will include study
of alternatives to major components, and also study of R&D
issues.
Marc Ross presented the ILC Project Management Plan for
the EDR phase. The EDR planning phase will last until March 2008 (describing milestones,
interim deliverables, and deliverables), and will produce an EDR schedule; it will be
succeeded by the Implementation Plan. The EDR goals will be consistent with a
construction start in ~2012. One milestone is to have a cavity gradient recommendation in
2009.
2. World Wide
Study
Many of the past activities of WWS have now been taken
over by the Research Director, reported Hitoshi Yamamoto, and its future role is under
discussion. It will continue to organize LCWS; it might continue as an ILC users' group,
and might continue outreach to the public and to the scientific community.
3. Research Director
The recently appointed Research Director, Sakue Yamada,
said that the 3 WWW co-chairs will temporarily serve as regional contacts representing
the ILC physics community in each region. He noted that the two detector groups selected
in 2008 may not be those ultimately performing the experiments, as room must be left for
new developments. He expected detector R&D to continue until ~2010.
Yamada discussed the International Detector Advisory Group
(IDAG), for which he hopes to have a member list by the end of 2007. IDAG will produce
benchmarks (which are needed soon) for the LOI proposals. If there are more than two LOIs
submitted, IDAG will make a recommendation on which two should be encouraged to proceed
to the EDR stage.
ILCSC members noted the importance of the two selected ILC
detectors being complementary and dissimilar.
4. Project Advisory Committee
(PAC)
The PAC, consisting of ~9 members, will assist the ILCSC
in its oversight of the ILC project. It will be complementary to the GDE's AAP on the
accelerator side, and its oversight functions will include the review of detector
activities, especially detector integration with the accelerator. Membership of the PAC
is currently under consideration, and ILCSC approved a mandate for the committee.
Summary of the ILCSC
Meeting
11 February 2008
DESY
1. GDE Report
Barry Barish described the GDE replanning, following the recent UK and US funding
actions. He noted the offers of help through visiting appointments, travel, etc., and
that there is no evidence of a "domino effect" following the UK and US actions.
The new GDE plan is more focussed, with strict prioritization and a stretched-out
schedule, and involves close collaboration with the XFEL; there will be coordination
with CLIC on common aspects, such as positron source, damping rings, beam delivery
system, detectors, etc. The first Technical Design Phase will last until 2010, while
the second phase continues to 2012.
2. Detectors
The ILC Research Director, Sakue Yamada, reported that a detector Directorate has
been formed, consisting of himself and 3 regional contacts; these regional contacts
will initially be the 3 WWS Co-Chairs Jim Brau, Francois Richard and Hitoshi Yamamoto.
Following the recent UK and US funding actions, there is a new detector timeline,
which will be in synchrony with that of the GDE. Expressions of Interest (EOIs) will
be requested by March 2008, and Letters of Intent (LOIs) by March 2009. Following
that, the LOIs will be validated by the International Detector Advisory Group (IDAG),
but the selection of 2 detectors will not occur at that time. The validation will be
to determine if a detector is capable of the desired physics, and whether the
proposing group is strong enough to carry it out.
3. World Wide Study
Francois Richard discussed how the recent UK and US funding actions affected the
individual detector collaborations. He noted that future linear collider detector
workshops will extend to CLIC issues.
4. Project Advisory Committee
(PAC)
Membership of the PAC was approved. This committee will review GDE accelerator
activities and, in addition, the ILC detector activities. Its mandate is given in
http://www.fnal.gov/directorate/icfa/ICFA_ILC_PAC_final_mandate.pdf.
Summary of the ILCSC
Meeting
4 June 2008
Dubna, Russia
1. GDE Report
Barry Barish reported on the next GDE ILC phase, the Technical Design Phase (TDP).
It will have a more traditional project management structure than for GDE activities so far,
and will have two stages ending in 2010 and 2012, respectively. Key R&D areas are high
gradient cavity R&D, and an updated value estimate. Barish noted that more work is needed
in the conventional facilities area. A "uniform" design site will be used, rather than having
three teams working on three separate site studies. Options such as a shallow site, single
tunnel, etc., will also be investigated, towards the goal of cost reduction.
Barish mentioned the recently formed GDE Accelerator Advisory Panel, whose members will
attend GDE technical meetings as "observers" and make suggestions and give feedback and
advice on a short timescale.
2. Research Director's Report
Sakue Yamada said that detector Expressions of Interest (EOIs) were received in March 2008,
and Letters of Intent (LOIs) are due by March 2009. The LOIs will then be validated by the
newly-formed International Detector Advisory Group (IDAG), where validation means ascertaining
whether the proposed detector can do the required physics, and whether the proposing group will
be strong enough to carry it out. Yamada now has a Research management structure which includes
three regional contacts; these are currently the three co-leaders of the Worldwide Study.
Yamada noted that there are now three detector concept groups, which will each submit an LOI.
With detector R&D not expected to be completed before 2010, it will not be possible before then
to make the selection of the final two complementary and contrasting ILC detectors. Yamada
commented that there is now collaboration on detectors between ILC and CLIC.
3. The Proposed Dubna ILC Site
There was a presentation by Grigori Shirkov (JINR) on the proposed Dubna ILC site. The
favorable site geology, nearby electrical power distribution, and rural location were noted.
The proposal has one accelerator tunnel ~20 meters below the surface, and a service tunnel
(constructed by open-cut methods) above it, and 3-4 meters below the surface.
4. GDE MOU
ILCSC approved a Memorandum of Understanding for the GDE Technical Design Phase, which
was subsequently sent to the initial signatory parties.
5. Reports
ILCSC heard reports from the Worldwide Study and on ILC activities in the three world regions.
Summary of the ILCSC
Meeting
31 October 2008
SLAC
1. GDE Report
Barry Barish discussed the recent report of the ILC Project Advisory Committee (PAC).
Among comments on specific PAC recommendations, Barish noted that there are now several
common ILC/CLIC activities and more joint groups, including positron source and damping
rings, are being formed. He believes that barriers between ILC and CLIC are breaking down.
Regarding the PAC's comments on the "Minimum Machine", the GDE wants more time to formulate
a reply, as this concept is still evolving.
2. Research Director's Report
Sakue Yamada discussed the PAC recommendations on detectors; he also gave more details
of the LOI requirements and validation process, and the role of IDAG. ILCSC agreed that
the IDAG mandate extends to 2012.
3. Gamma-Gamma ILC Precursor
A personal view of a gamma-gamma collider Higgs factory as a precursor to the ILC was
presented by Hirotaka Sugawara. Such a collider would not necessarily be the first stage
of a 500 GeV e+e- ILC, but Sugawara said a major argument for his proposal (which would
first require LHC Higgs results) is the much lower cost of such a collider compared to the ILC.
ILCSC members raised several questions, and requested that the GDE and Research Directors
have appropriate committees look at the technical implications, the impact on GDE, and the
physics aspects of Sugawara's proposal.
4. Worldwide Study (WWS)
The status of WWS was presented by Francois Richard. He noted the significant contacts
between the WWS and CLIC on detector issues, and the benefits of this to both groups.
Richard commented that although many of WWS's former roles have been taken over by the
Research Director's organization, WWS still has a unique and crucial role representing
the community working on ILC detector R&D.
5. GDE MOU
The MOU for the GDE Technical Design Phase has been signed by all of the initial signatories,
and is now posted in the "Recent Linear Collider Activities" section of the ICFA web site.
6. Reports
Reports were given on ILC activities in the Asia, Europe and Americas regions.
